/*
 * Copyright 2014-2023 Real Logic Limited.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.aeron.cluster;

import static io.aeron.Aeron.NULL_VALUE;

class LogSourceValidator
{
    private final ClusterBackup.SourceType sourceType;

    LogSourceValidator(final ClusterBackup.SourceType sourceType)
    {
        this.sourceType = sourceType;
    }

    boolean isAcceptable(final long leaderMemberId, final long memberId)
    {
        switch (sourceType)
        {
            case LEADER:
                return NULL_VALUE != leaderMemberId && leaderMemberId == memberId;
            case FOLLOWER:
                return NULL_VALUE == leaderMemberId || leaderMemberId != memberId;
            case ANY:
                return true;
        }

        throw new IllegalStateException("Unknown sourceType=" + sourceType);
    }
}
